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mallards GENERALLY wont land amoung parries...... so if game to do so,set all your parries off to one side where you dont want mallards,be best to have a gun covering them though..cause..you know...

we ,,,,,,, and laydown blinds ,,,,,,,,,,therein lies your answer???????.
set up with someone else over in another part of pond with no more than six decoys set in really close.
if that still...